Replace check for integration tests. (#110707)

* Replace check for integration tests.
* Revert changes in pkg/tsdb/mysql packages.
* Fix formatting of few tests.

pkg/services/sqlstore/transactions_test.go

@@ -5,14 +5,14 @@ import (
 	"errors"
 	"testing"
 
+	"github.com/grafana/grafana/pkg/util/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
 func TestIntegrationReuseSessionWithTransaction(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping integration test")
-	}
+	testutil.SkipIntegrationTestInShortMode(t)
+
 	ss, _ := InitTestDB(t)
 
 	t.Run("top level transaction", func(t *testing.T) {
@@ -69,9 +69,7 @@ func TestIntegrationReuseSessionWithTransaction(t *testing.T) {
 }
 
 func TestIntegrationPublishAfterCommitWithNestedTransactions(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping integration test")
-	}
+	testutil.SkipIntegrationTestInShortMode(t)
 
 	ss, _ := InitTestDB(t)
 	ctx := context.Background()